Mill-bush



G. STRAUSE.

Mill Spindle.

Patented Feb. 16. 1858.

ppgE SATS MILL-BUSH.

Specification of Letters Patent No. 19,386, dated February 16, 1858.

To all whom it may concern:

Be it known that I, GEORGE STRAUsn, of

Boonsboro, in the county of lVashington and State of Maryland, have invented a new and Improved Mill-Bush; and I do hereby declare that the following is a full and eXact description thereof, reference being had to the accompanying drawings, making part of this specification, Figure 1 being a top view of the bush with the spindle inserted therein; Fig. 2, a view of the under side of the same; Fig. 3, a vertical section in the line 00 00, Figs. 1 and 2; Fig. l, a similar section without the spindles; Fig. 5, a top view of the adjustable segments detached.

Like letters designate corresponding parts in all the figures.

The adjustable segments C, G, in the peculiar construction and arrangement of which my invention consists, are situated in the center of a bush block, or bearing, B, and slide closely but freely therein. They may be of any convenient number, composing, when put together, a ring, or tube, slightly tapering on the outer side; so that by having the joints, or spaces, between one another, somewhat open, and by moving the segments simultaneously up or down in the aperture of the bush block B, made correspondingly conical, the central aperture between them will be enlarged, or contracted, and thus loosen or tighten the bush around the spindle A, as desired.

In order to give the proper longitudinal, adjusting movement to all the segments together, I make a shoulder (Z, on each side of each, that on one side, facing downward, and on the other side, facing upward, substantially as shown in Fig. 4. The respective shoulders of all the segments lit, and face opposite to, the contiguous shoulders of the adjacent segments; so that by moving either segment up or down, all the others are necessarily moved up or down with it.

Thus by providing either one with an ad justing arrangement, the whole may be adjusted thereby, as well as if all were similarly provided.

In order to adjust one of the segments, I secure a rod D, to the lower end thereof; and cause the projecting end of said rod to pass through a projecting arm 6, of the bush block, as shown in Fig. 3. Then, by cutting a screw upon the end of the rod, and providing it with a nut E, the rod and its segment, may be moved up and down at pleasure. In the drawings, two segments C, C, are represented as provided with an adjustingarrangement; but one is sufficient, and I contemplate using but one. Any other convenient mode of adjusting, may be employed.

The upper side of the bush is inclosed by a cup a, as shown in Figs. 3, and l. The inner edges of the segments C, C, are beveled, or chamfered, as shown at c, a, in the same figures; so that together they form a flaring cup, in which the lubricating substance is put and retained. This arrangement provides an economical and convenient means of lubricating the bush and spindle.

that I claim as my invention, and desire to secure by Letters Patent, is

1. Providing the bush segments with shoulders (Z, cl, arranged substantially as de scribed, whereby all the segments, are adjusted by moving either one of them by means of a single set-screw.

2. I also claim beveling the upper ends of the segments, in the manner, and for the purpose specified.

The above specification of my improved mill-bush signed and witnessed, this 9th day of July 1856.

' G. STRAUSE.

\Vitnesses:

Z. G. ROBBINS, S. H. SHAKSPEARE. 

